1163978267 has 2 divisors, whose sum is σ = 1163978268. Its totient is φ = 1163978266.

The previous prime is 1163978197. The next prime is 1163978269. The reversal of 1163978267 is 7628793611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1163978267 is a prime.

Together with 1163978269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1163978269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581989133 + 581989134.

It is an arithmetic number, because the mean of its divisors is an integer number (581989134).

Almost surely, 2^1163978267 is an apocalyptic number.

1163978267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163978267 is an equidigital number, since it uses as much as digits as its factorization.

1163978267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 1163978267 is about 34117.1257142216. The cubic root of 1163978267 is about 1051.9173634651.

The spelling of 1163978267 in words is "one billion, one hundred sixty-three million, nine hundred seventy-eight thousand, two hundred sixty-seven".